Ultrasonic motors technologies and applications describes the operating mechanism electromechanical coupling models optimization design of structural parameters testing methods and drive control techniques of various ultrasonic motors and their applications. Ultrasonic motors technologies and applications describes the operating mechanism electromechanical coupling models optimization design of structural parameters testing methods and. Piezoelectric ultrasonic motor technology working and applications ultrasonic motors were invented in 1965 by vv lavrinko in general we are aware of the fact that the motive force is given by the electromagnetic field in the conventional motors. Ultrasonic motors technologies and applications describes the operating mechanism electromechanical coupling models optimization design of structural parameters testing methods and drive control techniques of various ultrasonic motors and their applications dr chunsheng zhao is a professor at nanjing university of aeronautics and astronautics nuaa where he is director of the precision driving laboratory at nuaa he is a member of the chinese academy of science and holds 54